Chess Opening Theory/1. d4/1...c5

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Old Benoni Defence
a b c d e f g h
8 a8 b8 c8 d8 e8 f8 g8 h8 8
7 a7 b7 c7 d7 e7 f7 g7 h7 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 b2 c2 d2 e2 f2 g2 h2 2
1 a1 b1 c1 d1 e1 f1 g1 h1 1
a b c d e f g h
Position in Forsyth-Edwards Notation(FEN)

rnbqkbnr/pp1ppppp/8/2p5/3P4/8/PPP1PPPP/RNBQKBNR

Moves: 1.d4 c5
ECO code: A43-A44
Parent: Queen's Pawn Opening

Old Benoni Defence[edit]

1...c5[edit]

With 1..c5 Black takes a sideways swipe at the central d-pawn. If White answers 1...c5 with 2. d5 the main lines of the Old Benoni Defence are reached. If white accepts the gambit with 2.dxc5, Black gets an easy game with ... e6 followed by ... Bc5.

One idea for Black is to transpose to a Modern Benoni, while avoiding the Four Pawn Attack, that is, variations with an early f2-f4 for white. Black can fianchetto his king bishop, and only after white plays Nf3 blocking a f-pawn, continuing with ... e6 and ... exd5.

Another idea is to keep the h8-a1 diagonal of Black's bishop open by delaying ... Nf6. Black could then play ... Ne7 instead of ... Nf6, or possibly, if White plays an early Nc3, give up his bishop by ... Bc3 to double the pawns.

Theory table[edit]

For explanation of theory tables see theory table and for notation see algebraic notation.

1. d4 c5

2 3 4 5 6
1 2. d5
d6
c4

g6

Nc3

Bg7

Nf3

Bxc3!?

bxc3

Nf6

King's Indian
Benoni
2 Nc3

g6

e4

Bg7

Nf3

Bxc3!?

bxc3

Nf6

= Schmid Benoni
3 d5
e5
e4
d6
Nc3
Be7
Nf3
Bg4
h3
+/=
Czech Benoni
4 e3
-
=
5 dxc5
e6
=

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References[edit]

  • Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
  • Modern Chess Openings: MCO-14. 1999. Nick de Firmian, Walter Korn. ISBN 0-8129-3084-3.
  • Batsford Chess Openings 2 (1989, 1994). Garry Kasparov, Raymond Keene. ISBN 0-8050-3409-9.